From 5a0e5a9261c251dba54afb8cc0b6b32ae9d95510 Mon Sep 17 00:00:00 2001
From: Zhao Yuhang <2546789017@qq.com>
Date: 周二, 12 12月 2023 19:50:34 +0800
Subject: [PATCH] add theme win32 message

---
 src/core/contexts/win32windowcontext.cpp |  223 +++++++++++++++++++++++++++++++------------------------
 1 files changed, 124 insertions(+), 99 deletions(-)

diff --git a/src/core/contexts/win32windowcontext.cpp b/src/core/contexts/win32windowcontext.cpp
index 297c39c..372d0c5 100644
--- a/src/core/contexts/win32windowcontext.cpp
+++ b/src/core/contexts/win32windowcontext.cpp
@@ -29,6 +29,8 @@
 #include "nativeeventfilter.h"
 #include "qwkglobal_p.h"
 
+#include "win10borderhandler_p.h"
+
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 Q_DECLARE_METATYPE(QMargins)
 #endif
@@ -357,44 +359,37 @@
         }
     }
 
-    static inline quint32 getWindowFrameBorderThickness(HWND hwnd) {
-        UINT result = 0;
+    static inline quint32 getSystemMetricsForDpi(int index, quint32 dpi) {
         const DynamicApis &apis = DynamicApis::instance();
-        if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd, _DWMWA_VISIBLE_FRAME_BORDER_THICKNESS,
-                                                  &result, sizeof(result)))) {
-            return result;
-        } else {
-            const quint32 dpi = getDpiForWindow(hwnd);
-            result = quint32(std::round(qreal(1) * qreal(dpi) / qreal(USER_DEFAULT_SCREEN_DPI)));
+        if (apis.pGetSystemMetricsForDpi) {
+            return ::GetSystemMetricsForDpi(index, dpi);
+        }
+        return ::GetSystemMetrics(index);
+    }
+
+    static inline quint32 getWindowFrameBorderThickness(HWND hwnd) {
+        const DynamicApis &apis = DynamicApis::instance();
+        if (UINT result = 0; SUCCEEDED(apis.pDwmGetWindowAttribute(
+                hwnd, _DWMWA_VISIBLE_FRAME_BORDER_THICKNESS, &result, sizeof(result)))) {
             return result;
         }
+        return getSystemMetricsForDpi(SM_CXBORDER, getDpiForWindow(hwnd));
     }
 
     static inline quint32 getResizeBorderThickness(HWND hwnd) {
-        const DynamicApis &apis = DynamicApis::instance();
-        if (apis.pGetSystemMetricsForDpi) {
-            const quint32 dpi = getDpiForWindow(hwnd);
-            return apis.pGetSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
-                   apis.pGetSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
-        } else {
-            return ::GetSystemMetrics(SM_CXSIZEFRAME) + ::GetSystemMetrics(SM_CXPADDEDBORDER);
-        }
+        const quint32 dpi = getDpiForWindow(hwnd);
+        return getSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
+               getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
     }
 
     static inline quint32 getTitleBarHeight(HWND hwnd) {
-        const auto captionHeight = [hwnd]() -> int {
-            const DynamicApis &apis = DynamicApis::instance();
-            if (apis.pGetSystemMetricsForDpi) {
-                const quint32 dpi = getDpiForWindow(hwnd);
-                return apis.pGetSystemMetricsForDpi(SM_CYCAPTION, dpi);
-            } else {
-                return ::GetSystemMetrics(SM_CYCAPTION);
-            }
-        }();
-        return captionHeight + getResizeBorderThickness(hwnd);
+        const quint32 dpi = getDpiForWindow(hwnd);
+        return getSystemMetricsForDpi(SM_CYCAPTION, dpi) +
+               getSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
+               getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
     }
 
-    static inline void updateInternalWindowFrameMargins(HWND hwnd, QWindow *window) {
+    static void updateInternalWindowFrameMargins(HWND hwnd, QWindow *window) {
         const auto margins = [hwnd]() -> QMargins {
             const auto titleBarHeight = int(getTitleBarHeight(hwnd));
             if (isWin10OrGreater()) {
@@ -460,7 +455,7 @@
 #endif
     }
 
-    static inline void syncPaintEventWithDwm() {
+    static void syncPaintEventWithDwm() {
         // No need to sync with DWM if DWM composition is disabled.
         if (!isDwmCompositionEnabled()) {
             return;
@@ -505,9 +500,9 @@
         apis.ptimeEndPeriod(ms_granularity);
     }
 
-    static inline void showSystemMenu2(HWND hWnd, const POINT &pos, const bool selectFirstEntry,
-                                       const bool fixedSize) {
-        const HMENU hMenu = ::GetSystemMenu(hWnd, FALSE);
+    static void showSystemMenu2(HWND hWnd, const POINT &pos, const bool selectFirstEntry,
+                                const bool fixedSize) {
+        HMENU hMenu = ::GetSystemMenu(hWnd, FALSE);
         if (!hMenu) {
             // The corresponding window doesn't have a system menu, most likely due to the
             // lack of the "WS_SYSMENU" window style. This situation should not be treated
@@ -809,74 +804,13 @@
                 return;
             }
 
-            case NeedsDrawBordersHook: {
-                auto &result = *static_cast<bool *>(data);
-                result = isWin10OrGreater() && !isWin11OrGreater();
-                return;
-            }
-
-            case BorderThicknessHook: {
-                auto args = static_cast<void **>(data);
-                const bool requireNative = *static_cast<const bool *>(args[0]);
-                quint32 &thickness = *static_cast<quint32 *>(args[1]);
-                const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
-                const auto nativeThickness = getWindowFrameBorderThickness(hwnd);
-                thickness = requireNative
-                                ? nativeThickness
-                                : QHighDpi::fromNativePixels(nativeThickness, m_windowHandle);
-                return;
-            }
-
-            case BorderColorsHook: {
-                auto arr = *reinterpret_cast<QList<QColor> *>(data);
-                arr.clear();
-                arr.push_back(kWindowsColorSet.activeLight);
-                arr.push_back(kWindowsColorSet.activeDark);
-                arr.push_back(kWindowsColorSet.inactiveLight);
-                arr.push_back(kWindowsColorSet.inactiveDark);
-                return;
-            }
-
-            case DrawBordersHook: {
-                auto args = static_cast<void **>(data);
-                auto &painter = *static_cast<QPainter *>(args[0]);
-                const auto &rect = *static_cast<const QRect *>(args[1]);
-                const auto &region = *static_cast<const QRegion *>(args[2]);
-                const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
-
-                QPen pen;
-                const auto borderThickness = int(QHighDpi::fromNativePixels(
-                    getWindowFrameBorderThickness(hwnd), m_windowHandle));
-                pen.setWidth(borderThickness * 2);
-                const bool active = m_delegate->isWindowActive(m_host);
-                const bool dark = isDarkThemeActive() && isDarkWindowFrameEnabled(hwnd);
-
-                if (active) {
-                    if (isWindowFrameBorderColorized()) {
-                        pen.setColor(getAccentColor());
-                    } else {
-                        static QColor frameBorderActiveColorLight(kWindowsColorSet.activeLight);
-                        static QColor frameBorderActiveColorDark(kWindowsColorSet.activeDark);
-                        pen.setColor(dark ? frameBorderActiveColorDark
-                                          : frameBorderActiveColorLight);
-                    }
-                } else {
-                    static QColor frameBorderInactiveColorLight(kWindowsColorSet.inactiveLight);
-                    static QColor frameBorderInactiveColorDark(kWindowsColorSet.inactiveDark);
-                    pen.setColor(dark ? frameBorderInactiveColorDark
-                                      : frameBorderInactiveColorLight);
-                }
-                painter.save();
-
-                // ### TODO: do we need to enable or disable it?
-                painter.setRenderHint(QPainter::Antialiasing);
-
-                painter.setPen(pen);
-                painter.drawLine(QLine{
-                    QPoint{0,            0},
-                    QPoint{rect.width(), 0}
-                });
-                painter.restore();
+            case DefaultColorsHook: {
+                auto &map = *static_cast<QMap<QString, QColor> *>(data);
+                map.clear();
+                map.insert(QStringLiteral("activeLight"), kWindowsColorSet.activeLight);
+                map.insert(QStringLiteral("activeDark"), kWindowsColorSet.activeDark);
+                map.insert(QStringLiteral("inactiveLight"), kWindowsColorSet.inactiveLight);
+                map.insert(QStringLiteral("inactiveDark"), kWindowsColorSet.inactiveDark);
                 return;
             }
 
@@ -886,6 +820,16 @@
             }
         }
         AbstractWindowContext::virtual_hook(id, data);
+    }
+
+    bool Win32WindowContext::needWin10BorderHandler() const {
+        return isWin10OrGreater() && !isWin11OrGreater();
+    }
+
+    void Win32WindowContext::setWin10BorderHandler(Win10BorderHandler *handler) {
+        win10BorderHandler.reset(handler);
+        handler->setBorderThickness(
+            int(getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId))));
     }
 
     bool Win32WindowContext::setupHost() {
@@ -950,6 +894,10 @@
 
         // Whether to show system menu
         if (systemMenuHandler(hWnd, message, wParam, lParam, result)) {
+            return true;
+        }
+
+        if (themeStuffHandler(hWnd, message, wParam, lParam, result)) {
             return true;
         }
 
@@ -1939,4 +1887,81 @@
         return false;
     }
 
+    bool Win32WindowContext::themeStuffHandler(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam,
+                           LRESULT *resul)
+    {
+        switch (message) {
+            case WM_DPICHANGED: {
+                const auto dpiX = UINT(LOWORD(wParam));
+                const auto dpiY = UINT(HIWORD(wParam));
+                break;
+            }
+            case WM_THEMECHANGED:
+            case WM_SYSCOLORCHANGE: {
+                break;
+            }
+            case WM_DWMCOLORIZATIONCOLORCHANGED: {
+                const QColor color = QColor::fromRgba(wParam);
+                const auto blendWithOpacity = *reinterpret_cast<LPBOOL>(lParam);
+                break;
+            }
+            case WM_SETTINGCHANGE: {
+                if (!wParam && lParam && std::wcscmp(reinterpret_cast<LPCWSTR>(lParam), L"ImmersiveColorSet") == 0) {
+                    const QColor color = getAccentColor();
+                }
+                break;
+            }
+            case WM_SIZE: {
+                const bool max = wParam == SIZE_MAXIMIZED;
+                const bool min = wParam == SIZE_MINIMIZED;
+                const bool full = isFullScreen(hWnd);
+                break;
+            }
+            case WM_ACTIVATE: {
+                const auto state = LOWORD(wParam);
+                const bool active = state == WA_ACTIVE || state == WA_CLICKACTIVE;
+                break;
+            }
+            default:
+                break;
+        }
+        return false;
+    }
+
+    void Win10BorderHandler::paintBorder(QPainter &painter, const QRect &rect,
+                                         const QRegion &region) {
+        Q_UNUSED(rect)
+        Q_UNUSED(region)
+
+        QPen pen;
+        pen.setWidth(m_borderThickness * 2);
+
+        const bool dark = isDarkThemeActive() &&
+                          isDarkWindowFrameEnabled(reinterpret_cast<HWND>(m_window->winId()));
+        if (isActive()) {
+            if (isWindowFrameBorderColorized()) {
+                pen.setColor(getAccentColor());
+            } else {
+                static QColor frameBorderActiveColorLight(kWindowsColorSet.activeLight);
+                static QColor frameBorderActiveColorDark(kWindowsColorSet.activeDark);
+                pen.setColor(dark ? frameBorderActiveColorDark : frameBorderActiveColorLight);
+            }
+        } else {
+            static QColor frameBorderInactiveColorLight(kWindowsColorSet.inactiveLight);
+            static QColor frameBorderInactiveColorDark(kWindowsColorSet.inactiveDark);
+            pen.setColor(dark ? frameBorderInactiveColorDark : frameBorderInactiveColorLight);
+        }
+        painter.save();
+
+        // ### TODO: do we need to enable or disable it?
+        painter.setRenderHint(QPainter::Antialiasing);
+
+        painter.setPen(pen);
+        painter.drawLine(QLine{
+            QPoint{0,                 0},
+            QPoint{m_window->width(), 0}
+        });
+        painter.restore();
+    }
+
 }

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